TSI and Adam, thanks for the advice. I actually just took a job as a promo girl for the local night scene so I can get out and meet more people (see my pic) and get paid for it.
Hotel Guy, my exploring so far has been girl on girl, light bondage, spanking, deep throating, anal, 2 & 3 guys, dp, public, spitting, swallowing, and creampie.
Where I want to guy? 2 or more girls, multiple girls and guys (orgy, I guess), submission, domination, watching, being watched and glory hole (or just strangers. Kind of like Masquerade).
As for joining my brother and his gf... I don't know.
Yes, I've thought about it, both the idea of her getting me off while she gets fucked and also the idea of him fucking me, but I just don't know if or how I could do that. Yes, it turns me on, but I always feel hesitant when it comes to reality.